Overview
The AMC1300BQDWVRQ1 from Texas Instruments is a precision, isolated amplifier designed for high-precision industrial and automotive applications. This device features a reinforced isolation barrier that provides up to 5 kV RMS of galvanic isolation, certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577. It supports a working voltage of up to 1.5 kV RMS and operates over a wide temperature range from –40°C to +125°C. The AMC1300BQDWVRQ1 is optimized for direct connection to low-impedance shunt resistors or other low-impedance voltage sources, making it ideal for accurate current control in various applications such as PFC stages, DC/DC converters, traction inverters, and onboard chargers (OBCs).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | ±250 mV | V |
| Fixed Gain | 8.2 | - |
| Offset Error | ±0.2 mV (max) | V |
| Offset Drift | ±0.9 µV/°C (max) | V/°C |
| Gain Error | ±0.3% (max) | % |
| Gain Drift | ±30 ppm/°C (max) | ppm/°C |
| Common-Mode Transient Immunity (CMTI) | 100 kV/µs (min) | kV/µs |
| Output Bandwidth | 250 kHz (min), 310 kHz (typ) | kHz |
| Isolation Voltage (VISO) | 5000 V RMS for 1 minute per UL1577 | V RMS |
| Working Isolation Voltage (VIOWM) | 1500 V RMS | V RMS |
| Transient Isolation Voltage (VIOTM) | 7071 V Pk | V Pk |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package | SOIC-8 | - |
Key Features
- Reinforced galvanic isolation up to 5 kV RMS, certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577.
- Optimized for direct connection to low-impedance shunt resistors or other low-impedance voltage sources.
- Low DC errors: offset error ±0.2 mV (max), offset drift ±0.9 µV/°C (max), gain error ±0.3% (max), and gain drift ±30 ppm/°C (max).
- High common-mode transient immunity (CMTI) of 100 kV/µs (min).
- Low EMI, meets CISPR-11 and CISPR-25 standards.
- Integrated missing-shunt and missing high-side supply detection features for simplified system-level design and diagnostics.
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to 125°C.
Applications
- Shunt-resistor-based current sensing in Hybrid Electric Vehicle (HEV) and Electric Vehicle (EV) charging piles, onboard chargers (OBC), DC/DC converters, and traction inverters.
- Power Factor Correction (PFC) stages.
- Critical measurement and control processes in high-voltage industrial systems.
Q & A
- What is the input voltage range of the AMC1300BQDWVRQ1?
The input voltage range is ±250 mV.
- What is the fixed gain of the AMC1300BQDWVRQ1?
The fixed gain is 8.2.
- What are the isolation ratings of the AMC1300BQDWVRQ1?
The device has reinforced galvanic isolation up to 5 kV RMS, with a working isolation voltage of up to 1.5 kV RMS and a transient isolation voltage of 7071 V Pk).
- What is the operating temperature range of the AMC1300BQDWVRQ1?
The operating temperature range is from –40°C to +125°C).
- What are the key error specifications of the AMC1300BQDWVRQ1?
The device has an offset error of ±0.2 mV (max), offset drift of ±0.9 µV/°C (max), gain error of ±0.3% (max), and gain drift of ±30 ppm/°C (max)).
- What is the common-mode transient immunity (CMTI) of the AMC1300BQDWVRQ1?
The CMTI is 100 kV/µs (min)).
- Does the AMC1300BQDWVRQ1 meet any specific automotive standards?
Yes, it is AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to 125°C).
- What are the integrated diagnostic features of the AMC1300BQDWVRQ1?
The device includes integrated missing-shunt and missing high-side supply detection features).
- What is the package type of the AMC1300BQDWVRQ1?
The package type is SOIC-8).
- What are some typical applications of the AMC1300BQDWVRQ1?
Typical applications include shunt-resistor-based current sensing in HEV/EV charging piles, onboard chargers, DC/DC converters, and traction inverters, as well as PFC stages and critical measurement in high-voltage industrial systems).
